Mill-Rose Blue Monster PTFE Pipe Thread Sealant Tape performs so well it's scary! Say good bye to pipe dope, this tape is compatible with a broad range of piping materials, will not harden or crack on the joints. It is effective across a broad range of temperatures and pressures. This thread sealant tape acts as a thread lubricant and anti-seize, will even help prevent electrolytic corrosion of threads.